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Date:   Fri, 3 Jan 2020 10:48:54 +0100
From:   Michal Koutný <>
To:     teawater <>
Cc:     Chris Down <>, Hui Zhu <>,
        Johannes Weiner <>,
        Michal Hocko <>,,,,,
Subject: Re: [RFC] memcg: Add swappiness to cgroup2

On Thu, Dec 26, 2019 at 02:56:40PM +0800, teawater <> wrote:
> For example, an application does a lot of file access work in a
> memory-constrained environment.
> [...]
> Both of them are extreme examples.
The examples are quite generic. Do cgroup v2 controls really prevent
handling such workloads appropriately?

Besides that, note that per-cgroup swappiness as used in v1 cannot be
simply transferred into v2 because, it's a concept that doesn't take
into account cgroup hierarchies (how would parent's swappiness affect
children? what would swappiness on inner nodes mean?).


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